CN102220008B - High-intensity fire-proof cable insulating material and preparation method of high-intensity fire-proof cable insulating material - Google Patents

High-intensity fire-proof cable insulating material and preparation method of high-intensity fire-proof cable insulating material Download PDF

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Publication number
CN102220008B
CN102220008B CN2011101197579A CN201110119757A CN102220008B CN 102220008 B CN102220008 B CN 102220008B CN 2011101197579 A CN2011101197579 A CN 2011101197579A CN 201110119757 A CN201110119757 A CN 201110119757A CN 102220008 B CN102220008 B CN 102220008B
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parts
powder
cable insulation
fireproof cable
zinc oxide
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CN102220008A (en
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顾观法
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Jiaxing multi angle wire and cable Co., Ltd
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JIAXING DUOJIAO WIRE AND CABLE CO Ltd
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Abstract

The invention discloses a high-intensity fire-proof cable insulating material comprising the following ingredients according to part by weight: 100 parts of methyl vinyl silicone rubber, 4-6 parts of glass powder, 10-20 parts of kieselguhr, 25-35 parts of mica powder, 5-15 parts of talcum powder, 3-5 parts of ferric oxide powder, 10-20 parts of kaoline, 25-35 parts of white carbon black, 4-6 parts of chloroplatinic acid and 1-3 parts of zinc oxide. The invention also discloses a preparation method of the high-intensity fire-proof cable insulating material, roller spacing and corresponding temperature can be adjusted, the methyl vinyl silicone rubber is rolled and pressed by an open mill, and then the white carbon black, the mica powder, the glass powder, the kieselguhr, the talcum powder and the kaoline are added in sequence for mixing, and then the roller spacing is adjusted for 2-3min, the ferric oxide powder, the chloroplatinic acid and the zinc oxide are added for mixing, and then the mixture is sheeted and cooled. The cable insulating material has low cost, porcelainized and fire-proof performances, and the like.

Description

High-strength fireproof cable insulation material and preparation method thereof
Technical field
The present invention relates to a kind of cable insulation material, specifically, is a kind of high-strength fireproof cable insulation material.
Background technology
Fire prevention (fire-resistant) cable is meant when presence of fire, can guarantee one type of cable of circuit integrity; This cable can guarantee that cable continues normally to provide electric power and the various signals of transmission in a long time, thereby provide safeguard for controlling fires and lifesaving when high temperature of fire; Especially very meaningful for personnel such as theater, subway, airport, Nuclear power plants intensive public arena or important place.
According to the difference of used refractory materials, existing flame resistant cable is divided into two types of mica tape flame resistant cable and mineral insulation flame resistant cables.These two types of flame resistant cables can both reach category-A (test temperature is 950 ℃~1000 ℃) fire, the integrity of circuit when guaranteeing fire, but these two kinds of cable qualitys are big, and production rate is slow, and cost is high.The domestic method of silicon rubber flame-retardant is in superpolymer, to add fire retardant; To reduce the combustionmaterial surface temperature; Dilution combustiblematerials molecular conecentration is cut off the supply of oxygen, forms barrier layer at the Zylox burning surface; Stop heat energy to transmit, suppress the raise purpose that reaches fire-retardant of temperature to the Zylox depth; But the cable that flame retardant rubber is processed can only delay the time that rubber is burnt till powder, if continue to be burnt, rubber just becomes powdery gradually and comes off, and has lost provide protection, and electric wire is with breakdown and cause short circuit.
Application number is that 200910116282.0 invention provides a kind of cable to use refractory insulating material, and it is by 100 parts of methyl vinyl silicone rubbers, 35 parts of thermal silicas; 45 parts of superfine mica powders; 1.5 parts of coupling agents, 3 parts of constitution controllers, 1.5 parts of compositions of vulcanizing agent.This cable forms easily to dissolve under middle low temperature (500 ℃) situation with refractory insulating material and drips, and causes the cable insulation deliquescing, and intensity reduces; Serious cause the insulation layer partial fracture and cause short circuit; In the above high temperature easy deformation of 1000 degree, cause the insulation layer internal diameter varies, explosion takes place or open circuit.
Summary of the invention
It is simple that the technical problem that the present invention will solve provides a kind of production, but low porcelainization and the fp high-strength fireproof cable insulation material of cost.
In order to solve the problems of the technologies described above, the present invention provides a kind of high-strength fireproof cable insulation material, and this high-strength fireproof cable insulation material is made up of the component of following weight part: 100 parts of methyl vinyl silicone rubbers; Glass powder 4-6 part, zeyssatite 10-20 part, mica powder 25-35 part; Talcum powder 5-15 part, croci 3-5 part, kaolin 10-20 part; WHITE CARBON BLACK 25-35 part, Platinic chloride 4-6 part and zinc oxide 1-3 part.
As the improvement of high-strength fireproof cable insulation material of the present invention, this high-strength fireproof cable insulation material is made up of the component of following weight part: 100 parts of methyl vinyl silicone rubbers, 5 parts in glass powder; 15 parts in zeyssatite, 30 parts of mica powders, 10 parts of talcum powder; 4 parts of crocis; 15 parts of kaolin, 30 parts of WHITE CARBON BLACKs, 2 parts in 5 parts of Platinic chlorides and zinc oxide.
The present invention also provides the preparation method of above-mentioned high-strength fireproof cable insulation material simultaneously:
Formulation components: 100 parts of methyl vinyl silicone rubbers, glass powder 4-6 part, zeyssatite 10-20 part, mica powder 25-35 part, talcum powder 5-15 part, croci 3-5 part, kaolin 10-20 part, WHITE CARBON BLACK 25-35 part, Platinic chloride 4-6 part and zinc oxide 1-3 part;
The adjustment roll spacing is 5~6mm, 30~35 ℃ of preceding roll temperatures, and 25~30 ℃ of back roll temperatures, roll extrusion methyl vinyl silicone rubber in mill adds WHITE CARBON BLACK, mica powder, glass powder, zeyssatite, talcum powder and kaolin then successively and carries out mixing 25min; Adjusting roll spacing then is 2~3min, adds croci, Platinic chloride and zinc oxide as constitution controller again and carries out mixingly, and mixing time is 25min; Descend at last the sheet cooling, promptly get the high-strength fireproof cable insulation material.
In the present invention, the effect of glass powder is: when temperature was increased to the glass powder softening temperature, the glass powder fusion formed liquid phase, is filled between clay particle (zeyssatite and kaolin) and the matrix degradation production particle; Along with the prolongation of time, liquid phase is infiltrated ceramic network gradually, behind the cooling curing, plays the bridging effect, the intensified ceramic structure.The part eutectic reaction also can take place and form liquid phase or form new solid phase, the intensified ceramic structure in oxide component in the glass powder and the composition in the clay.And its porcelain temperature of mixture that adds control agent (red stone, Platinic chloride, zinc oxide) will reduce (being reduced to 600~700 ℃ by>1000 ℃) greatly; And the adding of glass powder is little to the tensile strength influence of mixture, low temperature (500~1000 ℃) ablation intensity (flexural strength is greater than 3MPa) in improving simultaneously.
The high-strength fireproof cable insulation material that the present invention produces has following characteristic through test:
Ablating at high temperature (>950 ℃) to keep the ceramic structure of self-supporting, indeformable, and not explosion can guarantee cable works better still at high temperature.Especially in temperature more than 1083 ℃; When the copper core took place to melt, the insulation layer that high-strength fireproof cable insulation material of the present invention is processed formed the ceramic body pipeline of a hollow, and does not have volume change; Copper water can still keep conduction in cavity, so can guarantee that electric power is unobstructed.
Technical indicator:
Tensile strength:>=6N/mm 2
Elongation at break: >=250%
Heat is extended :≤175%
Cooling back velocity of variation :≤25%
Flame retardant properties: meet A among the GB/T19666, B, C level
Low smoke performance: minimum transmittance >=60%
Halogen performance requriements: PH weighted value >=4.3
Volume specific resistance: 1.12 * 10 15(Ω m).
In sum; High-strength fireproof cable insulation material of the present invention is different from common rubber; Also be different from flame retardant rubber; It has the characteristic that is superior to General Purpose Rubber and flame retardant rubber: it has possessed the performance of ordinary silicon rubber at normal temperatures, after the ablation of thermal-flame, forms hard housing, and the object that protection is burnt is not damaged; With the electric wire that high-strength fireproof cable insulation material of the present invention is made, the hard housing that ablated back forms is being protected electric wire, thereby has guaranteed the unimpeded of electric power, communication, for valuable time has been won in personnel's under the fire condition evacuation and rescue.
Embodiment
In following examples, all be the Powdered of particle diameter≤0.3mm as all components of raw material.
Implement the preparation method of row 1, a kind of high-strength fireproof cable insulation material, carry out following steps successively:
1), batching:
100 parts of methyl vinyl silicone rubbers, 4 parts in glass powder, 10 parts in zeyssatite, 25 parts of mica powders, 5 parts of talcum powder (hydrated magnesium silicate ultrafine powder), 3 parts of crocis, 10 parts of kaolin, 25 parts of WHITE CARBON BLACKs, 4 parts of Platinic chlorides, 1 part in zinc oxide.
2), the adjustment roll spacing is 5~6mm, 30~35 ℃ of preceding roll temperatures, 25~30 ℃ of back roll temperatures, roll extrusion methyl vinyl silicone rubber in mill adds WHITE CARBON BLACK then successively earlier, mica powder, glass powder, zeyssatite, talcum powder, kaolin carries out mixing 25min; Adjusting roll spacing then is 2~3min, adds croci, Platinic chloride, zinc oxide as constitution controller again, carries out mixingly, and mixing time is 25min.Descend at last the sheet cooling, promptly get the high-strength fireproof cable insulation material.
Implement the preparation method of row 2, a kind of high-strength fireproof cable insulation material, carry out following steps successively:
1), batching:
100 parts of methyl vinyl silicone rubbers, 6 parts in glass powder, 20 parts in zeyssatite, 35 parts of mica powders, 15 parts of talcum powder, 5 parts of crocis, 20 parts of kaolin, 35 parts of WHITE CARBON BLACKs, 6 parts of Platinic chlorides, 3 parts in zinc oxide.
Step 2) with embodiment 1.
Implement the preparation method of row 3, a kind of high-strength fireproof cable insulation material, carry out following steps successively:
1), batching:
100 parts of methyl vinyl silicone rubbers, 5 parts in glass powder, 15 parts in zeyssatite, 30 parts of mica powders, 10 parts of talcum powder, 4 parts of crocis, 15 parts of kaolin, 30 parts of WHITE CARBON BLACKs, 5 parts of Platinic chlorides, 2 parts in zinc oxide.
Its preparation method is with implementing row 1.
Glass powder among Comparative Examples 1, the cancellation embodiment 1, all the other are fully with embodiment 1; Get cable insulation material I.
Croci, Platinic chloride and zinc oxide among Comparative Examples 2, the cancellation embodiment 1, all the other are fully with embodiment 1; Get cable insulation material II.
Comparative Examples 3, application number are that 200910116282.0 cable is used refractory insulating material.
But in order to prove the performance place of the present invention's porcelain fireproof cable insulating material, the contriver is provided with following contrast experiment:
Test 1, the material of embodiment 1~embodiment 3 and Comparative Examples 1~Comparative Examples 3 is processed 6 kinds of cable sheaths that internal diameter is 5mm, the wall thickness of this cable sheath is 3mm; It is the copper core of 4.5mm that diameter all is set in each cable sheath.Every kind of cable sheath is provided with 5 repetitions, thereby guarantees the accuracy of experimental result.
According to the examination criteria of Britain flame resistant cable standard BS6387, above-mentioned cable placed apply the burning of 300 volts of voltage levvls under 1100 ℃ after 30 minutes, the trickle burning is 15 minutes again.
The embodiment of the invention 1, embodiment 2 and embodiment 3 pairing cables do not puncture (promptly test with bulb and be in illuminating state), and Comparative Examples 1, Comparative Examples 2 and Comparative Examples 3 all breakdown (promptly test with bulb and be in closing condition).
At last, it is also to be noted that what more than enumerate only is several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.

Claims (2)

1. the preparation method of high-strength fireproof cable insulation material, it is characterized in that: this high-strength fireproof cable insulation material is made up of the component of following weight part: 100 parts of methyl vinyl silicone rubbers, glass powder 4-6 part; Zeyssatite 10-20 part, mica powder 25-35 part, talcum powder 5-15 part; Croci 3-5 part; Kaolin 10-20 part, WHITE CARBON BLACK 25-35 part, Platinic chloride 4-6 part and zinc oxide 1-3 part;
The adjustment roll spacing is 5~6mm, 30~35 ℃ of preceding roll temperatures, and 25~30 ℃ of back roll temperatures, roll extrusion methyl vinyl silicone rubber in mill adds WHITE CARBON BLACK, mica powder, glass powder, zeyssatite, talcum powder and kaolin then successively and carries out mixing 25min; Adjusting roll spacing then is 2~3mm, adds croci, Platinic chloride and zinc oxide as constitution controller again and carries out mixingly, and mixing time is 25min; Descend at last the sheet cooling, promptly get the high-strength fireproof cable insulation material.
2. the preparation method of high-strength fireproof cable insulation material according to claim 1 is characterized in that: this high-strength fireproof cable insulation material is made up of the component of following weight part: 100 parts of methyl vinyl silicone rubbers, 5 parts in glass powder; 15 parts in zeyssatite, 30 parts of mica powders, 10 parts of talcum powder; 4 parts of crocis; 15 parts of kaolin, 30 parts of WHITE CARBON BLACKs, 2 parts in 5 parts of Platinic chlorides and zinc oxide.
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CN102515764A (en) * 2011-11-25 2012-06-27 成都亨通光通信有限公司 Method for preparing fireproof material
CN102757651A (en) * 2012-06-12 2012-10-31 安徽华海特种电缆集团有限公司 Silicone rubber insulating fluororubber cable material and preparation method thereof
CN102911441B (en) * 2012-09-18 2014-08-06 铜陵市铜都特种线缆厂 High-temperature-resistant moisture-proof mould-proof environment-friendly cable material and preparation method thereof
CN102993752A (en) * 2012-11-13 2013-03-27 安徽文峰电子科技集团有限公司 High-strength fire-retardant cable insulating material and preparation method thereof
CN103224710B (en) * 2013-04-01 2015-05-20 扬州亚光电缆有限公司 High-and-low-temperature-resistant, fireproof and environment-friendly rubber cable material and preparation method thereof
CN103483775A (en) * 2013-09-08 2014-01-01 安徽万博电缆材料有限公司 Formula of materials for improving breakdown strength of cable insulation layer
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Address after: No.308, Haixing West Road, Wuyuan street, Haiyan County, Jiaxing City, Zhejiang Province

Patentee after: Jiaxing multi angle wire and cable Co., Ltd

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